sched: let +nice tasks have smaller impact

[linux-2.6-microblaze.git] / kernel / sched_fair.c

diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index cf958ae..6c091d6 100644 (file)
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -1106,7 +1106,11 @@ static void check_preempt_wakeup(struct rq *rq, struct task_struct *p)
        }
 
        gran = sysctl_sched_wakeup_granularity;
-       if (unlikely(se->load.weight != NICE_0_LOAD))
+       /*
+        * More easily preempt - nice tasks, while not making
+        * it harder for + nice tasks.
+        */
+       if (unlikely(se->load.weight > NICE_0_LOAD))
                gran = calc_delta_fair(gran, &se->load);
 
        if (pse->vruntime + gran < se->vruntime)